We wrote a passenger app called Quotas based on the tutorial from this link
It worked well in OOD 1.6.10. After we upgraded our OOD to 1.7.14, it failed to start. The error message shows:
Could not find backports-3.8.0 in any of the sources (Bundler::GemNotFound)
We copied backport-3.8.0, which originally exists in the gem tree under Quotas’ root directory, to the centralized location of all Gems (/opt/ood/ondemand/root/usr/share/gems/2.5/ondemand/1.7.14/gems), then development version of Quotas works, but the production Quotas still reports the same error.